ISO 4658:2020

Published (Edition 4, 2020)

This publication was last reviewed and confirmed in 2025. Therefore this version remains current.

Expected to be replaced by ISO/DIS 4658 within the coming months.

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Abstract

This document specifies, for acrylonitrile-butadiene rubbers (NBRs):

— physical and chemical tests on raw rubbers;

— standard materials, a standard test formulation, equipment and processing methods for evaluating the vulcanization characteristics.

The mixing preferred method is the single stage mixing with LIM (laboratory internal mixer).

Draft

International Standard

ISO/DIS 4658

Acrylonitrile-butadiene rubber (NBR) — Evaluation procedure

Reference number
ISO/DIS 4658

Edition 1

Draft International Standard

Acrylonitrile-butadiene rubber (NBR) — Evaluation procedure

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This standard contributes to the following Sustainable Development Goals